Patients were enrolled in a study at two clinical centers. It is of interest to assess if medication adherence differs between the two centers. The 2 x 2 table below shows how many subjects were adherent and not adherent at each center.

Adherent Not Adherent

Center 1 28 21

Center 2 30 29

Which statement below provides a correct interpretation of these data?

(a) The risk of being adherent at Center 1 is 29% greater than the risk of being adherent at Center 2.

(b) The risk of being adherent at Center 2 is 29% greater than the risk of being adherent at Center 1.

(c) The odds of being adherent at Center 1 are 29% greater than the odds of being adherent at Center 2.

(d) The odds of being adherent at Center 2 are 29% greater than the odds of being adherent at Center 1. (e) The odds of being adherent at Center 1 are 12% greater than the odds of being adherent at Center 2.